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Characterisation of Finite Length Composites

Rheological Studies of Processed PP-Glass Composites
  • W. Gleissle und J. Curry
Veröffentlicht/Copyright: 3. Juni 2013
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International Polymer Processing
Aus der Zeitschrift International Polymer Processing Band 18 Heft 1

Abstract

This paper is a technical report about the structure and the rheological behaviour of processed polypropylene-glass fibre composites. The present studies has been carried out as a part of the international project on the Characterization of Finite Length Composites initiated and organized by the IUPAC Working Party: Structure and Properties of Commercial Polymers. Seven industrial and university laboratories in Europe and in USA worked together in a common project to investigate the influence of the processing conditions on the rheology and manufacturing behaviour of polymer-glass composites preprocessed in a twin screw extruder. All investigations presented concern the influence of the processing procedure on the structure of the composites such as fiber length destribution, fiber orientation, destribution of the fibre concentration in the sample and the rheology of the composites. The flow behaviour dependent on the processing conditions has been measured using capillary rheometers to investigate the viscosity functions, the entrance and outlet pressures losses as well as for observations of the shape and internal structure of extruded composites. Torsional rheometers for low shear rate, oscillatory and transient viscosity behaviour and for the quantification of fibre orientation with ongoing shear process. Additionaly queeze flow experiments are made.

Most laboratories used analogous recording sytems to documente the primary experimental results. So results are partially given here as direct copies from the original data readings. The different data handling and the transfer of data from laboratory to laboratory for comparison of results leads sometimes to unavoidable inhomogeneous (due to the style and possibilities of the different laboratories) presentation of the results. The present report is a result of data collecting, data comparison and documentation of results over a period of nearly ten years.

* Mail address: W. Gleissle, Inst. f. Mech. Verfahrenstechnik und Mechanik, Universität Karlsruhe

In cooperation with: H. M. Laun, BASF-Aktiengesellschaft, J. Lawler Celanese USA, R. Bailey, ICI, Wilton UK, M. Lecomte, Shell Research and Techn. Center, Louvain-la-Neuve, C. Dehennau, Solvay, Brussels, W. Gleissle, Universität Karlsruhe, J. Curry, Coperion Werner & Pfleiderer, USA

Received: 2002-10-10
Accepted: 2002-12-10
Published Online: 2013-06-03
Published in Print: 2003-03-01

© 2003, Carl Hanser Verlag, Munich

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Polymorphic and Crystal Structures from Crystallization in Polymer Processing
  5. Compounding/Screw Extrusion
  6. Flow Properties and Morphology of PC/LCP Blends Affected by the Addition of Glass Fiber and Resulted Mutual Influences
  7. Modeling Filler Dispersion along a Twin-Screw Extruder
  8. Characterisation of Finite Length Composites
  9. Single Screw Extrusion of Natural Fibre Reinforced Thermoplastics (NFRTP)
  10. Fiber and Film
  11. A New Method to Determine the Filament Force Tension within the Fibre Formation Zone
  12. Diameter Profile Measurements for CO2 Laser Heated Drawing Process of PET Fiber
  13. Stress Induced Crystallization in Elongational Flow
  14. Improved Spinnability of Metallocene Polyethylenes by Using Processing Aids
  15. Melt Spinning of Reactive Extruded and/or Blended Polymer Fibers by Means of an Online Coupled Twin Screw Extruder
  16. Cast Film Problem: A Non Isothermal Investigation
  17. Rotational Molding
  18. Effect of Processing History on the Sintering of Ethylene Copolymers
  19. Injection Molding
  20. Five Geometric Principles for Injection Molding
  21. Modelling of Residual Stresses and Warpage in Sandwich Injection Moulding
https://doi.org/10.3139/217.1721

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Polymorphic and Crystal Structures from Crystallization in Polymer Processing
  5. Compounding/Screw Extrusion
  6. Flow Properties and Morphology of PC/LCP Blends Affected by the Addition of Glass Fiber and Resulted Mutual Influences
  7. Modeling Filler Dispersion along a Twin-Screw Extruder
  8. Characterisation of Finite Length Composites
  9. Single Screw Extrusion of Natural Fibre Reinforced Thermoplastics (NFRTP)
  10. Fiber and Film
  11. A New Method to Determine the Filament Force Tension within the Fibre Formation Zone
  12. Diameter Profile Measurements for CO2 Laser Heated Drawing Process of PET Fiber
  13. Stress Induced Crystallization in Elongational Flow
  14. Improved Spinnability of Metallocene Polyethylenes by Using Processing Aids
  15. Melt Spinning of Reactive Extruded and/or Blended Polymer Fibers by Means of an Online Coupled Twin Screw Extruder
  16. Cast Film Problem: A Non Isothermal Investigation
  17. Rotational Molding
  18. Effect of Processing History on the Sintering of Ethylene Copolymers
  19. Injection Molding
  20. Five Geometric Principles for Injection Molding
  21. Modelling of Residual Stresses and Warpage in Sandwich Injection Moulding
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